Wilson, Lyn Hatherly, author
Routledge, 1996
Buku Teks
Rose, H.J.
Hutchinson's University Library , [date of publication not identified]
Buku Teks
Routledge, 1994
Buku Teks
Gomperz, Theodor, author
John Murray , 1955
Buku Teks
Gomperz, Theodor, author
John Murray, 1949
Buku Teks